The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 1998
Filed:
Feb. 28, 1996
Silvio Bou-Ghazale, Chandler, AZ (US);
Stephen Douglas Weitzel, Round Rock, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A hybrid circuit board capable of operating in a functional mode and a test mode includes macro block circuitry and non-macro block circuitry surrounding the macro block circuitry. The circuit board includes a test bridge circuit coupling the macro block circuitry to the surrounding non-macro block circuitry during the functional mode and for bypassing the macro block circuitry during the test mode. The test bridge circuit is responsive to a mode signal for isolating outputs of the macro block and for coupling the inputs of the macro block to isolated outputs of the macro block during the test mode. A mapping circuit maps the inputs of the macro block to the inputs of the non-macro circuit.